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Ondrej

Boys' name

Literal meaning not recorded

Ondrej has been given to 14 babies in the U.S. since 2003. It was used fewer than 5 times in 2025, so it doesn't appear in the latest year's list — today it's a genuinely uncommon pick. Its peak year was 2008, with 8 recorded.

Babies named Ondrej, 2008

1 in 491,000

Ondrej over time, 1880–2025

Boys
0246818801900192019401960198020002020

Based on births in the U.S. Babies given the name each year. Hover the chart — or focus it and use the arrow keys — for any year. Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Ondrej: meaning, origin, and history

Literal meaning not recorded

Deeper origin not confirmed in the cited records

What Ondrej means

Ondrej is a given name.

Origin, language, and formation

Ondrej is used in Slovak.

Pronunciation and spelling

In Slovak, Ondrej is pronounced /ɔndrej/.

American usage and historical context

In the United States, 14 boys were recorded with the name Ondrej between 2003 and 2008. Its highest annual count was 8 in 2008; its best national rank was #9,613 in 2008.

Sources & methodologyReferences, data & attribution

Meaning, origin, and language notes draw on the references below.

American popularity figures use published Social Security Administration records for this exact spelling. Counts below five for a name, sex, and year are omitted.

Wiktionary material is available under CC BY-SA 4.0.

How common is Ondrej?

Ondrej had fewer than 5 recorded uses in 2025, so these figures use 2008, the last year it was published.

Among all babies, 2008
1 in 491,000
8 of 3,930,727 births
Among boys only
1 in 255,000
<0.01% of boys
Rank, 2008
Unranked
Fewer than 5 uses
Coin-flip room size
340,573 kids
Even odds of a second one

Where Ondrej sits on the popularity scale

Rarest published (5 a year)#1 — Liam (20,818)

Chance at least one other child shares the name

If the other children were drawn at random from the 2008 national name distribution. Real classrooms cluster by region and community, so treat these as a floor, not a ceiling.

Class of 20Under 1%
Class of 30Under 1%
Grade of 100Under 1%
School of 500Under 1%

Put another way: gather 340,573 children born in 2008 and it's an even bet that one of them is another Ondrej. In a class of 30 the chance is Under 1%.

When Ondrejs were born

Half of everyone ever recorded as Ondrej was born before 2008 — so the typical Ondrej is around 17 today.

Median birth year
2008
About 17 years old
Biggest decade
2000s
100.0% of all use
Born in the last 25 years
100.0%
A modern name
Recorded since 1950
14
People you could plausibly meet
Choose a decade

2000s — 100.0% of all recorded uses (14).

Is Ondrej rising or falling?

Rank movement and count movement can disagree — the number of distinct names in use keeps growing, so a name holding a steady count still slides down the list. Both are shown.

Rank vs 1 year ago
—
Not ranked then
Rank vs 5 years ago
New entry
Not ranked then
Rank vs 10 years ago
—
Not ranked then
Births vs 10 years ago
—
Not published both years
Share of its own peak
0%
Peak was 2008 (8)
Years since peak
17
Years
Year-to-year steadiness
Not enough data
Too few years
Best rank ever
#9,613
2008

Spellings of Ondrej

Ondrej is not the most common spelling — Andrew is, with 84.6% against Ondrej's <0.01%.

Grouped by closeness of spelling (up to two letter changes), same sex, with a floor on all-time use. It catches Sophia/Sofia and Aiden/Ayden, and misses spellings that sound alike but look different, like Sean and Shawn.

Ondrej around the world

Where Ondrej ranks in official birth records elsewhere in the world. Rankings only — the number of births isn’t comparable between places, so it isn’t shown.

  • England & Wales
    2006–2024
    #5,120
    in 2024
  • Ireland
    2012–2012
    #616
    in 2012
  • South Australia
    1978–1983
    #443
    in 1983

Popularity data from Office for National Statistics, Central Statistics Office and Consumer and Business Services (South Australia). ONS data under Open Government Licence v3.0. CSO, CBS SA data under CC BY 4.0.

Ondrej by the numbers

The raw record for each sex the name is used for.

As a boy's name

Rank in 2025
Unranked
Trend vs 5 yrs ago
—
Best rank ever
#9,613
2008
Peak year
2008
8 that year
First recorded
2003
Last recorded
2008
All-time count
14
Count in 2025
Under 5

Names similar to Ondrej

Matched on shared beginnings and endings, similar length, and comparable popularity.

OndrayOndreazOndraAndrejOndre

Sibling names for Ondrej

Names from the same era and popularity tier — the two things that make a sibling set feel deliberate — skipping lookalike spellings and shared initials.

Explore around Ondrej

Top names of 2008, Ondrej's peak yearThe 2000s in fullOther names that peaked in 2008Boys' names starting with OCzech Boy Names